Vampire Diaries fans have a lot of bite-worthy questions, but today’s chosen victim asked us about an undead Original fave: What year was Klaus (Joseph Morgan) born?

It should be an easy answer. After all, everyone has a birthday, right? But since Klaus completely embodies that mysterious man MO, we know very little personal information about him.

We first get a hint at how old he is when when we see him in the 1400s. He meets Katherine (Nina Dobrev) in 1492 and attempts to break a curse that bound him to the moonstone.

And, thanks to Episode 4 of Season 4, we also know that in 1114 AD, Klaus, Elijah (Daniel Gillies), and Rebekah (Claire Holt) met a vampire hunter who was part of The Five in Italy. By then, they’d already been undead for some time.

Season 3, Episode 8, “Ordinary People” gives us the best approximation for Klaus’s birth year: The episode flashes back 1,000 years to when the Original family was transformed into vampires. Klaus was in his 20s at the time and was likely born sometime in the 10th century, making him one of the hottest old dudes we’ve ever seen.

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